<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>参数列表</el-breadcrumb-item>
          
          </el-breadcrumb>
          <!-- 卡牌 -->
          <el-card>

            <el-alert
            title="只允许为第三级分类设置相关参数" :closable="false" show-icon
            type="warning">
          </el-alert>
          <!-- 选择商品分类 -->
          <el-row class="cat_opt">
              <el-col>
                  <span>选择商品分类：</span>
                <!-- 级联 -->
                  <el-cascader
                  v-model="selectedCateKeys"
                  @change="handleChanged"
                  expand-trigger="hover"
                  :options="cateList"
                  :props="cateListProps"
                    clearable change-on-select
                
                   ></el-cascader>
              </el-col>
          </el-row>
          <el-tabs v-model="activeName" @tab-click="handleTabClick">
            <el-tab-pane label="动态参数" name="many"> 
               <el-button type="primary" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加参数</el-button>
               <el-table :data="manyData" border stripe>
                <el-table-column type="expand">
                     <template slot-scope="scope">
                          
                         <el-tag  v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
                     <!-- 输入文本框 -->
                     <el-input
  class="input-new-tag"
  v-if="scope.row.inputVisible"
  v-model="scope.row.inputValue"
  ref="saveTagInput"
  size="small"
  @keyup.enter.native="handleInputConfirm(scope.row)"
  @blur="handleInputConfirm(scope.row)"
>
</el-input>
<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>

                        </template>
                </el-table-column>
          <el-table-column type="index">

          </el-table-column>
          <el-table-column  label="参数名称" prop="attr_name">

        </el-table-column>
        <el-table-column label="操作" >
<template slot-scope="scope">
    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEdit(scope.row.attr_id)">编辑</el-button>
    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
</template>
        </el-table-column>
               </el-table>
            </el-tab-pane>
            <el-tab-pane label="静态属性" name="only">
                <el-button type="primary" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加属性</el-button>
                <el-table :data="onlyData" border stripe>
                    <el-table-column type="expand">
                        <template slot-scope="scope">
                             
                            <el-tag  v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">{{item}}</el-tag>
                        <!-- 输入文本框 -->
                        <el-input
     class="input-new-tag"
     v-if="scope.row.inputVisible"
     v-model="scope.row.inputValue"
     ref="saveTagInput"
     size="small"
     @keyup.enter.native="handleInputConfirm(scope.row)"
     @blur="handleInputConfirm(scope.row)"
   >
   </el-input>
   <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
   
                           </template>
                   </el-table-column>
              <el-table-column type="index">
    
              </el-table-column>
              <el-table-column  label="属性名称" prop="attr_name">
    
            </el-table-column>
            <el-table-column label="操作" >
    <template slot-scope="scope">
        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEdit(scope.row.attr_id)">编辑</el-button>
        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
    </template>
            </el-table-column>
                   </el-table>
            </el-tab-pane>
          
          </el-tabs>
          </el-card>
          <!-- 对话框 -->
          <el-dialog
  :title="'添加'+titleText"
  :visible.sync="addDialogVisible"
  width="30%" @close="adDialogClosed"
   >
   <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" class="demo-ruleForm">
    <el-form-item :label="titleText" prop="attr_name">
      <el-input v-model="addForm.attr_name"></el-input>
    </el-form-item>
    </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams" >确 定</el-button>
  </span>
</el-dialog>
<!-- 修改参数对话框 -->
<el-dialog
  :title="'修改'+titleText"
  :visible.sync="editDialogVisible"
  width="30%" @close="editialogClosed"
   >
   <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px" class="demo-ruleForm">
    <el-form-item :label="titleText" prop="attr_name">
      <el-input v-model="editForm.attr_name"></el-input>
    </el-form-item>
    </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editParams" >确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>
export default {
    data() {
        return {
            cateList:[],
            cateListProps:{
                value:'cat_id',
                label:'cat_name',
                children:'children'
            },
            // 级联双向绑定
            selectedCateKeys:[],
            activeName:'many',
            onlyData:[],
            manyData:[],
            addDialogVisible:false,
            addForm:{
                 attr_name:''
            },
            addFormRules:{
                attr_name: [
            { required: true, message: '请输入参数名称', trigger: 'blur' },
            { min: 1, max: 15, message: '长度在 1 到 15 个字符', trigger: 'blur' }
          ]
            },
            editDialogVisible:false,
            editForm:{
                attr_name:''
            },
            editFormRules:{
                attr_name: [
            { required: true, message: '请输入参数名称', trigger: 'blur' },
            { min: 1, max: 15, message: '长度在 1 到 15 个字符', trigger: 'blur' }
          ]
            }
            

        }
    },
    created() {
        this.getCateList()
    },
    methods: {
     async   getCateList(){
         const {data:res} = await this.$http.get('categories')
         if(res.meta.status !==200){
             return this.$message.error('获取商品分类失败')
         }
         this.cateList=res.data
         console.log(this.cateList)
        },
        async handleChanged(){
            this.getParamsData()

    },
    handleTabClick(){
       this.getParamsData()
    },
    async getParamsData(){
        console.log(this.selectedCateKeys)
        if(this.selectedCateKeys.length!==3){
            this.selectedCateKeys=[]
            this.manyData=[],
            this.onlyData=[]
            return
        }
        const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:this.activeName}})
        if(res.meta.status !==200){
             return this.$message.error('获取参数列表失败')
             
         }
      
         res.data.forEach(item=>{
            item.attr_vals = item.attr_vals ? item.attr_vals.split(','):[]
            item.inputVisible=false
            item.inputValue=''
         })
         console.log(res.data)
         if(this.activeName==='many'){
             this.manyData=res.data
         }else{
             this.onlyData=res.data
         }
         console.log(this.cateId)
        
    },
    // 监听对话框关闭事件
    adDialogClosed(){
        this.$refs.addFormRef.resetFields()
    },
    addParams(){
        this.$refs.addFormRef.validate(async valid=>{
            if(!valid){
                return
            }
    const {data:res} = await this.$http.post(`categories/${this.cateId}/attributes`,{attr_name:this.addForm.attr_name,attr_sel:this.activeName})
    if(res.meta.status !==201){
        console.log(this.activeName)
        console.log(res)
             return this.$message.error('添加参数失败')
             
         }
         this.$message.success('添加参数成功')
         this.addDialogVisible=false
         this.getParamsData()

})
    },
    async showEdit(attr_id){
        console.log(attr_id)
        const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,{params:{attr_sel:this.activeName}})
        if(res.meta.status !==200){
       
             return this.$message.error('获取参数失败')
             
         }
         this.editForm=res.data
          this.editDialogVisible=true
    },
    editialogClosed(){
        this.$refs.editFormRef.resetFields()
    },
    // 点击确认修该
    editParams(){
        this.$refs.editFormRef.validate(async valid=>{
            if(!valid){
                return
            }
    const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{attr_name:this.editForm.attr_name,attr_sel:this.activeName})
    if(res.meta.status !==200){
        // console.log(this.activeName)
        console.log(res)
             return this.$message.error('修改参数失败')
             
         }
         this.$message.success('修改参数成功')
         this.editDialogVisible=false
         this.getParamsData()
    })
    },
    // 删除参数
   async removeParams(attr_id){
      const confirmResult = await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!=='confirm'){
            return this.$message.info('已取消删除')
        }
        // 删除业务
        const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
    if(res.meta.status !==200){
        // console.log(this.activeName)
        console.log(res)
             return this.$message.error('删除参数失败')
             
         }
         this.$message.success('删除参数成功')
         this.editDialogVisible=false
         this.getParamsData()
    },
    //  失去焦点/回车
   async handleInputConfirm(row){
        // 判断输入是否为空格
        if(row.inputValue.trim().length===0){
            row.inputValue=''
            row.inputVisible=false
            return
        }
              row.attr_vals.push(row.inputValue.trim())
              row.inputValue=''
              row.inputVisible=false
            const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
                  attr_name:row.attr_name,
                  attr_sel:row.attr_sel,
                  attr_vals:row.attr_vals.join(',')
                  
              })
              if(res.meta.status !==200){
        // console.log(this.activeName)
        console.log(res)
             return this.$message.error('添加参数失败')
             
         }
         this.$message.success('添加参数成功')
          
    },
    showInput(row){
        row.inputVisible=true

        //  让文本框自动获得焦点
        // $nextTick作用：当页面上元素重新被渲染之后，才会指定回调函数中的代码
        this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus();
        });
    },
    // 删除对应参数
   async handleClose(i,row){
          row.attr_vals.splice(i,1)
          const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
                  attr_name:row.attr_name,
                  attr_sel:row.attr_sel,
                  attr_vals:row.attr_vals.join(',')
                  
              })
              if(res.meta.status !==200){
        // console.log(this.activeName)
        console.log(res)
             return this.$message.error('删除参数失败')
             
         }
         this.$message.success('删除参数成功')
    }
},
    computed: {
        isBtnDisabled(){
            if(this.selectedCateKeys.length!==3){
                return true
            }
            return false
        },
        cateId(){
            if(this.selectedCateKeys.length===3){
                return this.selectedCateKeys[2]
                console.log(this.selectedCateKeys[2])
            }
            return null
        },
        titleText(){
            if(this.activeName==='many'){
                return '动态参数'
            }else{
                return '静态属性'
            }
        }

    }


}
</script>
<style lang="less" scoped>
       .cat_opt{
           margin: 15px 0;
       }
       .el-tag{
           margin:  5px 10px;
       }
       .input-new-tag{
           width: 120px;
       }
</style>